03. Stream Of Letters

function solve(input) {
  let command;
  let index = 0;
  let word = "";
  let result = "";
  let cCounter = 0;
  let oCounter = 0;
  let nCounter = 0;
  while ((command = input[index]) !== "End") {
    if (
      (command.charCodeAt(0) >= 65 && command.charCodeAt(0) <= 90) ||
      (command.charCodeAt(0) >= 97 && command.charCodeAt(0) <= 122)
    ) {
      if (command !== "c" && command !== "o" && command !== "n") {
        word += command;
      } else {
        if (command === "c" && cCounter === 0) {
          cCounter++;
        } else if (command === "c" && cCounter !== 0) {
          word += "c";
        }
        if (command === "o" && oCounter === 0) {
          oCounter++;
        } else if (command === "o" && oCounter !== 0) {
          word += "o";
        }
        if (command === "n" && nCounter === 0) {
          nCounter++;
        } else if (command === "n" && nCounter !== 0) {
          word += "n";
        }
      }

      if (cCounter + oCounter + nCounter === 3) {
        result += word + " ";
        cCounter = 0;
        oCounter = 0;
        nCounter = 0;
        word = "";
      }
    }
    index++;
  }
  console.log(result);
}